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High Speed Data Converter Lab Sessions

Updated guide for .LAB sessions on high speed data converters featuring the TSW1400 and TSW3085 reference designs, RF transmitter, pattern generator, and dual receiver. Includes setup block diagrams and software loading instructions.

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High Speed Data Converter Lab Sessions

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  1. LAB Sessions High Speed Data Converter University Updated Q1 2012 – Jim Seton

  2. TSW1400 + TSW3085 - RF Transmitter Reference Design - Pattern Generator TSW1265 + TSW1400 • - Dual Receiver Reference Design • - Data Capture TI Confidential – NDA Restrictions

  3. TSW1400 (Pattern Generator Mode) TSW3085 TX RF Output TSW1400 (Capture Mode) TSW1265 TI Confidential – NDA Restrictions

  4. TSW1400 & TSW3085 Setup Block Diagram 4 TI Confidential – NDA Restrictions

  5. TSW1400 + TSW1265 Setup Block Diagram PC USB USB 5V Clock Source USB CLKIN1 USB 5V in REF In J1 ADC INTERFACE RFIN-A RF Source Input (TSW3085) TSW1400 ADC TSW1265 REF Out LO2 6V in TSW3065 6V 6V in 6V 5 TI Confidential – NDA Restrictions

  6. Software Loading The latest version of the GUI software files and User’s Guide manual can be found on the TI website by entering “TSW1400EVM” in the search parameter as shown below. TI Confidential – NDA Restrictions

  7. TSW1400 Software Loading • Unzipping the software package will generate a folder called “slwc107b.zip. • Under the unzipped folder called SLWC107 will be a “setup.bat file, a folder called “EVM GUI” • and another folder called “FTDI”. The EVM GUI folder contains the GUI code and the other folder contains the drivers for the USB interface. • If running the software for the first time, run the file called “setup.bat”. This loads the FTDI drivers followed by installing the High Speed Data Converter Pro GUI software. • Follow the on-screen instructions during installation. • Once installed, the GUI executable will reside in the following directory: • C:\Program Files\Texas Instruments\High Speed Data Converter Pro • Click on “High Speed Data Converter Pro.exe to start the GUI. TI Confidential – NDA Restrictions

  8. TSW3085 Software Loading • Unzip the TSW308x software package. • Run the file called “setup.bat”. • Follow the on-screen instructions during installation. • Once installed, the GUI executable will reside in the following directory: • C:\Program Files\Texas Instruments\TSW308x • Click on “TSW308x.exe to start the GUI. TI Confidential – NDA Restrictions

  9. TSW1400 + TSW3085 Bring Up • Power up the TSW3085. • Power up the TSW1400 EVM. • Connect power to TSW3065 (USB cable). • Start up the TSW1400 GUI. • Connect the GUI to the TSW1400EVM. • “No Firmware. Please select a device to load firmware into the board” message will appear. Click “OK”. • Start up the TSW308x GUI. TI Confidential – NDA Restrictions

  10. Program TSW3085 • Change the Device Selection setting at the top to be the “TSW3085 EVM Software Control”. • Click on “Load Regs” button at the top. • Select file called “LTE_INT2x_10MHz_614p4M.txt”. • Click on “Send All” button. • The LOCK LED on the TSW3085 will turn green confirming the TSW3085EVM is programmed. TI Confidential – NDA Restrictions

  11. Program TSW1400 • On the TSW1400 GUI, select “DAC” (Top right of GUI) to change the mode of operation to pattern generation. • Select the DAC3482 in the drop down menu. • The following Firmware dialog message will show up. Click yes to load the firmware. TI Confidential – NDA Restrictions

  12. Program TSW1400 • When the firmware is finished downloading, set the Data Rate to “307.2M” and the DAC Option to “2’s Complement”. • Click the “Load File to transfer” button. • Select the file called “LTE_Freq_30MHz_Amp_0dB_BW_20.003MHz_307.2MSPS.tsw. • Change the Window selection from Rectangular to Hanning. • Select the “Send” button to the left of Load File to transfer the data into TSW1400. TI Confidential – NDA Restrictions

  13. On the DAC GUI, click on the SIF Sync button twice to synchronize the DAC. The TSW1400 should be loaded with the correct pattern and the TSW1400 GUI will look like the image on the next slide. TI Confidential – NDA Restrictions

  14. TSW1400 GUI with loaded data TI Confidential – NDA Restrictions

  15. TSW3085 Output • The TSW3085 output will look as shown in the next slide if connected to a Spectrum Analyzer, centered around 2.13 GHz. TI Confidential – NDA Restrictions

  16. TSW3085 Output TI Confidential – NDA Restrictions

  17. Powering TSW1400, TSW1265, TSW3065 • Power up TSW1400 EVM (5V wall plug) • Power up TSW1265 EVM (6V wall plug) • Power up TSW3065 EVM (USB cable) TI Confidential – NDA Restrictions 17

  18. TSW1265 Software

  19. TSW1265 Software Loading • Unzipping the software package will generate a folder called “slwc105b.zip. • Under the unzipped folder called SLWC105 run the “setup.exe” file. • Follow the on-screen instructions during installation. • Once installed, the GUI executable will reside in the following directory: • C:\Program Files\Texas Instruments ADCs\TSW1265 GUI • Click on “TSW1265 GUI.exe to start the GUI. TI Confidential – NDA Restrictions

  20. Configure the TSW1265 • Open the TSW1265 GUI located in Start Menu>Program Files>Texas Instruments ADCs • Verify that the GUI is connected to the USB port • Select “Load” and navigate to the “Configuration Files” folder in the TSW1265 GUI installation directory. Select “250MHz_onboard_clock.txt” and click “Ok” • Push the “Send All” button a couple of times to make sure all the registers are loaded. The LED labeled “LMK LOCK” (D3) on the TSW 1265 will light up when the clock is configured correctly. TI Confidential – NDA Restrictions 20

  21. Configure TSW3065 for LO • Make sure both silver toggle switches are set to 6V and Internal • The DIP switches on the side can be set in the following configurations • Set the DIP switch settings so that only the D4 LED is lit (1960MHz). On the TSW3065, the DIP switch being UP turns the LED off, down turns the LED on. • Connect “LO Diff P Out” on the TSW3065 to the LO2 input on the TSW1265. This may be shared with the TSW3085 demo. 21 TI Confidential – NDA Restrictions 21

  22. High Speed Data Converter Pro Configuration • Open “High Speed Data Converter Pro” by going toStart>All Programs>Texas Instruments ADCs • The following prompt will ask you to select the serial number of the TSW1400 connected. This should be printed on the TSW1400 hardware. Select the correct serial number and click “ok”. TI Confidential – NDA Restrictions 22

  23. High Speed Data Converter Pro Configuration • If a message shown below appears when connecting to the TSW1400 board, then proceed by clicking OK again. • Make sure the ADC tab is selected at the top, as shown on the next page. TI Confidential – NDA Restrictions 23

  24. High Speed Data Converter Pro Configuration TI Confidential – NDA Restrictions 24

  25. High Speed Data Converter Pro Configuration • Now select ADS4249 in the drop down menu highlighted by the red box in the image below. After doing so, the Firmware dialog message will show up. Click yes to load the firmware. TI Confidential – NDA Restrictions 25

  26. TSW1400 GUI Configuration • When the firmware is finished downloading, select “Single Tone” from the test selection menu. Choose 65356 as your record length, set the sampling rate to “250M” and the input target frequency to “180M”. Hit enter after entering the target frequency to have the GUI calculate the coherent input frequency. • Select “Channel 2/2” from the drop down box above the plot window. • Select the “Hanning” window from the drop down box. TI Confidential – NDA Restrictions 26

  27. TX/RX Loop Back • Now connect the TSW3085 transmitter demo to the TSW1265 receiver demo by connecting the TX OUT port of the TSW3085 to the RFIN A port on the TSW1265. • The TSW3085 should already be transmitting a 20-MHz wide LTE signal. • Go to the TSW1265 GUI and click on the “LMH6521 Gain” tab. Set the gain of Channel A to 3 dB. Be careful not to set the gain too high to avoid damaging the ADC. • Click “capture” on the TSW1400 GUI that is connected to the TSW1265. • The result is shown on the next page. • Use the draggable cursors to verify the signal is approximately 20 MHz wide. TI Confidential – NDA Restrictions 27

  28. 20-MHz LTE Result TI Confidential – NDA Restrictions 28

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